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0 karma0 postsjoined about 1 month ago

I finally understood why my time-series aggregation was silently wrong — and how Polars' group_by_dynamic fixed it

🌐 reddit.comSource

From Reddit - r/learnpython: I finally understood why my time-series aggregation was silently wrong — and how Polars' group_by_dynamic fixed it

#category#time#polars#minute#article#discussion#englishlanguage
about 1 month ago

I visualized 7 years of Brent crude oil futures using year-based color encoding — the market regimes cluster in a way a single-color line never would.

🌐 reddit.comSource

From Reddit - r/visualization: I visualized 7 years of Brent crude oil futures using year-based color encoding — the market regimes cluster in a way a single-color line never would.

#color#year#encoding#volume#brent#article#discussion#englishlanguage
about 1 month ago

[D] A variable with Pearson r ≈ 0.12 turned out to be useless for prediction — how do you formally distinguish state variables from predictive signals?

🌐 reddit.comSource

From Reddit - r/statistics: [D] A variable with Pearson r ≈ 0.12 turned out to be useless for prediction — how do you formally distinguish state variables from predictive signals?

#variable#state#predictive#pearson#formally#article#discussion#englishlanguage
about 1 month ago